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Programming-Idioms

# 370 Ordinal form
Assign to the string s the ordinal number word for the integer a.

1 → "1st", 2 → "2nd", 3 → "3rd", etc.
New implementation

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To emphasize a name: _x → x

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Other implementations 
String s;
int x = a % 100;
if (x > 9 && x < 21) s = "th";
else s = switch (a % 10) {
    case 1 -> "st";
    case 2 -> "nd";
    case 3 -> "rd";
    default -> "th";
};
s = a + s;

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